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special brass CW708R

Round bar

A technical illustration of the product with dimensions of the material special brass CW708R from the material Brass in the shape Round bar
  • Form Round bar
  • Material Brass
  • Material special brass CW708R
  • Material chemically EN 573-3 SoMs68 / CuZn31Si1

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You can find an overview of all standard dimensions here in our stock list.
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An image of the material special brass CW708R from the material Brass in the shape Round bar
A technical illustration of the product of the material special brass CW708R from the material Brass in the shape Round bar

Areas of application

Bearing bushes

Bearing material for rolled bushes

Guides and other sliding elements

Areas of application

Bushings for balance shafts

Bushings for aluminium pistons

Bushes for steel pistons and connecting rods

Areas of application

Bushes for drive joints

Bushes for camshaft bearings

Bushes and thrust washers in the differential

Areas of application

Bushes for gearbox main shaft

Bushings for disc and drum brakes

Thrust washers made of strip

Areas of application

Thin-walled tubes etc.

Features of this material

  • Good cold forming properties
  • increased tarnish resistance
  • excellent corrosion resistance to engine and gear oils

Information about the material

  • Aviation
    Aviation No
  • Chemical specifications
    Cu (from) 66
    Cu (to) 70
    Fe (from) 0.4
    Fe (to) 0.4
    Ni (from) 0.5
    Ni (to) 0.5
    Other 0.5
    Pb (from) 0.8
    Pb (to) 0.8
    Rest Zn
    Si (from) 0.7
    Si (to) 1.3
  • Corrosion resistance
    Normal atmosphere 2
    Seawater atmosphere 2
  • Food industry
    suitable according to DIN EN 602 No
  • Material
    Material chemically EN 573-3 SoMs68 / CuZn31Si1
  • physical properties
    Coefficient of thermal expansion from 20 to 200°C 19.2 K⁻¹10⁻⁶
    Density 8.41 g/cm³
    Specific electrical conductivity at 20°C 8.9 m/Ω*mm²
    Specific electrical conductivity at 200°C 7.2 m/Ω*mm²
    Specific electrical resistance at 20°C 0.1124 Ω*mm²/m
    Specific electrical resistance at 200°C 0.1389 Ω*mm²/m
    Specific heat at 100°C 0.403 J/(kg·K)
    Specific heat at 20°C 0.394 J/(kg·K)
    Specific heat at 200°C 0.415 J/(kg·K)
    Thermal conductivity at 100°C 79 W/m*K
    Thermal conductivity at 20°C 71 W/m*K
    Thermal conductivity at 200°C 86 W/m*K
  • Soldering
    Brazing 3
    Soft soldering 3
  • Welding
    Gas 3
    Laser 3
    MIG 3
    Resistance spot welding 5
    TIG 2
  • Aviation
    Aviation No
  • Chemical specifications
    Cu (from) 66
    Cu (to) 70
    Fe (from) 0.4
    Fe (to) 0.4
    Ni (from) 0.5
    Ni (to) 0.5
    Other 0.5
    Pb (from) 0.8
    Pb (to) 0.8
    Rest Zn
    Si (from) 0.7
    Si (to) 1.3
  • Corrosion resistance
    Normal atmosphere 2
    Seawater atmosphere 2
  • Food industry
    suitable according to DIN EN 602 No
  • Material
    Material chemically EN 573-3 SoMs68 / CuZn31Si1
  • physical properties
    Coefficient of thermal expansion from 20 to 200°C 19.2 K⁻¹10⁻⁶
    Density 8.41 g/cm³
    Specific electrical conductivity at 20°C 8.9 m/Ω*mm²
    Specific electrical conductivity at 200°C 7.2 m/Ω*mm²
    Specific electrical resistance at 20°C 0.1124 Ω*mm²/m
    Specific electrical resistance at 200°C 0.1389 Ω*mm²/m
    Specific heat at 100°C 0.403 J/(kg·K)
    Specific heat at 20°C 0.394 J/(kg·K)
    Specific heat at 200°C 0.415 J/(kg·K)
    Thermal conductivity at 100°C 79 W/m*K
    Thermal conductivity at 20°C 71 W/m*K
    Thermal conductivity at 200°C 86 W/m*K
  • Soldering
    Brazing 3
    Soft soldering 3
  • Welding
    Gas 3
    Laser 3
    MIG 3
    Resistance spot welding 5
    TIG 2
  • Aviation
    Aviation No
  • Chemical specifications
    Cu (from) 66
    Cu (to) 70
    Fe (from) 0.4
    Fe (to) 0.4
    Ni (from) 0.5
    Ni (to) 0.5
    Other 0.5
    Pb (from) 0.8
    Pb (to) 0.8
    Rest Zn
    Si (from) 0.7
    Si (to) 1.3
  • Corrosion resistance
    Normal atmosphere 2
    Seawater atmosphere 2
  • Food industry
    suitable according to DIN EN 602 No
  • Material
    Material chemically EN 573-3 SoMs68 / CuZn31Si1
  • physical properties
    Coefficient of thermal expansion from 20 to 200°C 19.2 K⁻¹10⁻⁶
    Density 8.41 g/cm³
    Specific electrical conductivity at 20°C 8.9 m/Ω*mm²
    Specific electrical conductivity at 200°C 7.2 m/Ω*mm²
    Specific electrical resistance at 20°C 0.1124 Ω*mm²/m
    Specific electrical resistance at 200°C 0.1389 Ω*mm²/m
    Specific heat at 100°C 0.403 J/(kg·K)
    Specific heat at 20°C 0.394 J/(kg·K)
    Specific heat at 200°C 0.415 J/(kg·K)
    Thermal conductivity at 100°C 79 W/m*K
    Thermal conductivity at 20°C 71 W/m*K
    Thermal conductivity at 200°C 86 W/m*K
  • Soldering
    Brazing 3
    Soft soldering 3
  • Welding
    Gas 3
    Laser 3
    MIG 3
    Resistance spot welding 5
    TIG 2
  • Aviation
    Aviation No
  • Chemical specifications
    Cu (from) 66
    Cu (to) 70
    Fe (from) 0.4
    Fe (to) 0.4
    Ni (from) 0.5
    Ni (to) 0.5
    Other 0.5
    Pb (from) 0.8
    Pb (to) 0.8
    Rest Zn
    Si (from) 0.7
    Si (to) 1.3
  • Corrosion resistance
    Normal atmosphere 2
    Seawater atmosphere 2
  • Food industry
    suitable according to DIN EN 602 No
  • Material
    Material chemically EN 573-3 SoMs68 / CuZn31Si1
  • physical properties
    Coefficient of thermal expansion from 20 to 200°C 19.2 K⁻¹10⁻⁶
    Density 8.41 g/cm³
    Specific electrical conductivity at 20°C 8.9 m/Ω*mm²
    Specific electrical conductivity at 200°C 7.2 m/Ω*mm²
    Specific electrical resistance at 20°C 0.1124 Ω*mm²/m
    Specific electrical resistance at 200°C 0.1389 Ω*mm²/m
    Specific heat at 100°C 0.403 J/(kg·K)
    Specific heat at 20°C 0.394 J/(kg·K)
    Specific heat at 200°C 0.415 J/(kg·K)
    Thermal conductivity at 100°C 79 W/m*K
    Thermal conductivity at 20°C 71 W/m*K
    Thermal conductivity at 200°C 86 W/m*K
  • Soldering
    Brazing 3
    Soft soldering 3
  • Welding
    Gas 3
    Laser 3
    MIG 3
    Resistance spot welding 5
    TIG 2
  • Aviation
    Aviation No
  • Chemical specifications
    Cu (from) 66
    Cu (to) 70
    Fe (from) 0.4
    Fe (to) 0.4
    Ni (from) 0.5
    Ni (to) 0.5
    Other 0.5
    Pb (from) 0.8
    Pb (to) 0.8
    Rest Zn
    Si (from) 0.7
    Si (to) 1.3
  • Corrosion resistance
    Normal atmosphere 2
    Seawater atmosphere 2
  • Food industry
    suitable according to DIN EN 602 No
  • Material
    Material chemically EN 573-3 SoMs68 / CuZn31Si1
  • physical properties
    Coefficient of thermal expansion from 20 to 200°C 19.2 K⁻¹10⁻⁶
    Density 8.41 g/cm³
    Specific electrical conductivity at 20°C 8.9 m/Ω*mm²
    Specific electrical conductivity at 200°C 7.2 m/Ω*mm²
    Specific electrical resistance at 20°C 0.1124 Ω*mm²/m
    Specific electrical resistance at 200°C 0.1389 Ω*mm²/m
    Specific heat at 100°C 0.403 J/(kg·K)
    Specific heat at 20°C 0.394 J/(kg·K)
    Specific heat at 200°C 0.415 J/(kg·K)
    Thermal conductivity at 100°C 79 W/m*K
    Thermal conductivity at 20°C 71 W/m*K
    Thermal conductivity at 200°C 86 W/m*K
  • Soldering
    Brazing 3
    Soft soldering 3
  • Welding
    Gas 3
    Laser 3
    MIG 3
    Resistance spot welding 5
    TIG 2
  • Aviation
    Aviation No
  • Chemical specifications
    Cu (from) 66
    Cu (to) 70
    Fe (from) 0.4
    Fe (to) 0.4
    Ni (from) 0.5
    Ni (to) 0.5
    Other 0.5
    Pb (from) 0.8
    Pb (to) 0.8
    Rest Zn
    Si (from) 0.7
    Si (to) 1.3
  • Corrosion resistance
    Normal atmosphere 2
    Seawater atmosphere 2
  • Food industry
    suitable according to DIN EN 602 No
  • Material
    Material chemically EN 573-3 SoMs68 / CuZn31Si1
  • physical properties
    Coefficient of thermal expansion from 20 to 200°C 19.2 K⁻¹10⁻⁶
    Density 8.41 g/cm³
    Specific electrical conductivity at 20°C 8.9 m/Ω*mm²
    Specific electrical conductivity at 200°C 7.2 m/Ω*mm²
    Specific electrical resistance at 20°C 0.1124 Ω*mm²/m
    Specific electrical resistance at 200°C 0.1389 Ω*mm²/m
    Specific heat at 100°C 0.403 J/(kg·K)
    Specific heat at 20°C 0.394 J/(kg·K)
    Specific heat at 200°C 0.415 J/(kg·K)
    Thermal conductivity at 100°C 79 W/m*K
    Thermal conductivity at 20°C 71 W/m*K
    Thermal conductivity at 200°C 86 W/m*K
  • Soldering
    Brazing 3
    Soft soldering 3
  • Welding
    Gas 3
    Laser 3
    MIG 3
    Resistance spot welding 5
    TIG 2

1 very good
2 good
3 moderate
4 poor
5 unsuited
0 Not specified

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